linux-kernel - Re: [PATCH v4 10/27] IB/Verbs: Reform cm related part in IB-core cma/ucm

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Date:	Thu, 16 Apr 2015 17:22:38 +0200
From:	Michael Wang <yun.wang@...fitbricks.com>
To:	"Hefty, Sean" <sean.hefty@...el.com>,
	Hal Rosenstock <hal@....mellanox.co.il>
CC:	Roland Dreier <roland@...nel.org>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Tom Tucker <tom@...ngridcomputing.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Hoang-Nam Nguyen <hnguyen@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	infinipath <infinipath@...el.com>, Eli Cohen <eli@...lanox.com>,
	"Latif, Faisal" <faisal.latif@...el.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>,
	"Weiny, Ira" <ira.weiny@...el.com>, Tom Talpey <tom@...pey.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Doug Ledford <dledford@...hat.com>
Subject: Re: [PATCH v4 10/27] IB/Verbs: Reform cm related part in IB-core
 cma/ucm



On 04/16/2015 04:31 PM, Hefty, Sean wrote:
>>> This is equivalent to today where the checks are per node rather than
>>> per port.
>>>
>>> Should all checks here be port 1 based or only certain ones like listen
>>> ? For example, in connect/reject/disconnect, don't we already have port
>>> ? Guess this can be dealt with later as this is not a regression from
>>> the current implementation.
>>
>> Yeah, these parts of cma may need more carve in future, like some new
>> callback
>> for different CM type as Sean suggested.
>>
>> Maybe directly using 1 could help to highlight the problem ;-)
> 
> Only a few checks need to be per device.  I think I pointed those out previously.  Testing should show anywhere that we miss fairly quickly, since port would still be 0.  For the checks that can be updated to be per port, I would rather go ahead and convert them.

Got it, will be changed in next version :-)

To be confirmed:
				PORT ASSIGNED
	rdma_init_qp_attr	Y
	rdma_destroy_id		unknown
	cma_listen_on_dev	N
	cma_bind_loopback	N
	rdma_listen		N
	rdma_connect		Y
	rdma_accept		Y
	rdma_reject		Y
	rdma_disconnect		Y
	ib_ucm_add_one		N

Is this list correct?

Regards,
Michael Wang

> 
> - Sean
> 
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